Grim Reaper-The top, alpha, king of all reapers. The Grim Reaper knows who, how, and when he/she is going to die. His/her eyes glow when a victim of death occurs. They are blind towards the living, when someone is about to die and/or towards the dead, he/she can see.
Messenge Reaper-Their job is to tell him/her he/she is going to die. They only have the time refrence of when. They can also send messages from other dead people to their loved ones through Oujia Board.
Life Reapers-Rare, very rare. Life Reapers, if the person dead and in ghost form wants to return and live longer, it is then the Life Reapers' job to send them back down.
Death Reapers-What you would call the twin of Life Reapers. When a person wishes to die but wither can't and/or doesn't want any witnessess, the Death Reapers out of mercy will kill them without having him/her being seen. They are not rare as they are seen side by side with the Grim Reapers.
Seeker Reaper- Can see all. The past deaths, present deaths, and future deaths. They are blind all the way through, but even though they are blinded, they can see time and space but only time and space.